Don't give up
If you are flexible with PTO/sick days at work or school, there are still some decent games available. I got 4 bleachers for Friday 7/20 against AZ - should be some good pitching matchups. I also got 4 bleachers for Friday 8/31 against the disastros.
There was a St Louis poster a week or two ago looking to take his family to Wrigley. While I know bleachers may not be the route you are going, I have a friend with a 'few' assigned seat options. We generally take a trip to St Louis every year and wouldn't mind working out a trade- if it makes sense. Whoever you are, show yourself and we can discuss.